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Abstract

There is provided an organosol of surface-modified fluoride colloid particles obtained by coating the surface of a fluoride colloid particle as a core with an organophosphorus compound and a method for producing the organosol. An organosol of a surface-modified fluoride colloid particle comprising: a fluoride colloid particle as a core; and at least one type of an organophosphorus compound selected from a group consisting of organophosphorus compounds represented by the following general formula (1), (2), and (3):

description='In-line Formulae' end='lead'(R—O)_nP(═O)(OM)_3-n  (1)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'(R—O)_nP(OM)_3-n  (2)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'(R)_nP(═O)(OM)_3-n  (3)description='In-line Formulae' end='tail'

where R represents a substituted or unsubstituted alkyl group, alkenyl group or aryl group, M represents a hydrogen atom, an alkali metal or NZ₄ (Z represents a hydrogen atom or an alkyl group); and n represents an integer of 1 or 2, the organophosphorus compound coating a surface of the fluoride colloid particle.

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First Claim